'. 1 DISTILLING APPARATUS. 



COMMON THINGS. 



WATER. 



1. Water may be solid, liquid, or vapour. 2. Colourless and tasteless. 

 3. Its weight. 4. Expands by heat. 5. Point of greatest density. 

 6. Freezing-point. 7. Boiling. 8. Evaporation. 9. Heat ab- 

 sorbed in evaporation, 10. Superficial evaporation. 11. Saturation 

 of air by vapour. 12. Process of drying. 13. Case of roads and 

 paths. 14. Drying linen. 15. "Wind promotes drying. 16. Water 

 never naturally pure. 17. Contains fixed air. 18. And other sub- 

 stxinces in solution Hard water. 19. Soft water. 20. Mineral 

 springs. 21. Filtration. 22. Filtering-paper. 23. Artificial niters. 

 24. Water not absolutely colourless. 25. How to obtain water 

 absolutely pure. 26. Rain water nearly so. 27. River water. 

 Thames water. 28. Water not an element Its composition. 

 29. Methods of purifying it. 30. Distillation of water. 31. Conver- 

 sion of vapour into water. 32. Weight of vapour. 33. Condensation. 

 34. Distilling apparatus. 35. Composition and decomposition. 36. 

 Oxygen and hydrogen. 37. Hydrogen. 38. Fitted for balloons. 39. 

 Inflammable. 40. Water produced by combining oxygen and hydrogen. 

 41. Apparatus for this experiment. 42. Composition of water. 

 43. Analysis of water.. 44. By voltaic current. 45. By other methods. 

 46. By potassium and sodium. 47. By iron. 



LAKDNER'S MUSEUM OF SCIENCE. H 97 



No. 18. 



